Friday, April 4, 2014

How do you solve square roots of irrational numbers w/o a calculator? for example sqroot of 68.

There are many ways. One way is to sort of work backwards:
64 < 68 < 81 (close to 64),
so sqrt(68) is close to 8.
Then by trial and error, determine that
8.2 < sqrt(68) < 8.3
Continue this process as long as you are able.

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